Exercise platform



FIG. 1 is a top, front, left side perspective view of an exercise platform showing my new design;

FIG. 2 is a top plan view;

FIG. 3 is a front elevation view;

FIG. 4 is a rear elevation view;

FIG. 5 is a bottom plan view;

FIG. 6 is a left side view; and,

FIG. 7 is a right side view. 

The ornamental design for an exercise platform design, as shown. 